Tentukanlah nilai x : a.24 - 5(x - 11) = 26 b.(x - 7) - 8 = 9 c.-6x - 7(28 + 7x) - 9 = 25 d. x + 5 -.... Question from @Jonathan3201

October 2018 2 20 Report

Tentukanlah nilai x :
a.24 - 5(x - 11) = 26
b.(x - 7) - 8 = 9
c.-6x - 7(28 + 7x) - 9 = 25
d. x + 5 -(6x + 35) = 40
e. (3x - 4)5 + 20 × 2x = 50

mithakeren A. 24 -5(x-11) = 26
24 -5x +55 = 26
-5x = 26 - 24 - 55
-5x = -53
x = -53/-5
= 10,6
b. (x-7)- 8 = 9
x - 7 - 8 = 9
x = 9 + 7 + 8
x = 24
c. -6x - 7(28+7x) - 9 = 25
-6x -196 - 49x - 9 = 25
- 6x - 49x = 25 + 196 + 9
-55x = 230
x = 230/-55
= 46/11
d. x + 5 -(6x + 35) = 40
x + 5 - 6x - 35 = 40
x - 6x = 40 - 5 + 35
-5x = 70
x = 70/-5
= -14
e. (3x - 4)5 + 20 × 2x = 50
15x - 20 + 40x = 50
15x + 40x = 50 +20
55x = 70
x = 70/55
x = 14/11

0 votes Thanks 1

citraningtyas33 b. (x-7)- 8 = 9
x - 7 - 8 = 9
x = 9 + 7 + 8
x = 24
c. -6x - 7(28+7x) - 9 = 25
-6x -196 - 49x - 9 = 25
- 6x - 49x = 25 + 196 + 9
-55x = 230
x = 230/-55
= 46/11
d. x + 5 -(6x + 35) = 40
x + 5 - 6x - 35 = 40
x - 6x = 40 - 5 + 35
-5x = 70
x = 70/-5
= -14

0 votes Thanks 0

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